Training Builder vs Celeris Loop
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Training Builder
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Training Builder builds structured workouts and sends them to the Fitness app on your Apple Watch. Warm-up, intervals, cool-down – every section with its own duration or distance and its own target zone. That is all you need: build the workout, send it to the watch, go. If you want more, there is a coach that plans your week, asks in the morning how you are doing, and tells you afterwards what the workout delivered. THE EDITOR Build the workout on iPhone or iPad, from a template or from a blank sheet. Every section gets a duration or a distance, plus a target: heart rate, power, pace or cadence. Repeat blocks hold what repeats. 8 × 400 m with 200 m of jogging in between sits there as one block, not as sixteen rows. Change the repeat once and every round follows. Above the list sits the intensity profile as a chart. Tap to select a section, drag to reorder. THE COACH The coach builds workouts by training rules, not at random. Give it the sport, the duration and the intent – it places warm-up, work and recovery to match. A single workout, a whole week, or a twelve-week block up to race day. Threshold, VO2max and pace get fixed days, and every week brings a different variant – no two weeks are alike. It runs on the device: what you give it never leaves your iPhone. Your workouts themselves sync between your devices over iCloud, and the measurements come from HealthKit. Got a plan from your coach? Bring it in: paste the text or pick a photo. That needs an iPhone with Apple Intelligence – everything else the coach builds from training rules, on any device running iOS 26. THE DAILY CHECK-IN Three questions in the morning: how was your sleep, how are your legs, how much energy is there. Plus resting heart rate, heart rate variability and sleep from Apple Health. Out of that comes a traffic light for the day. If it shows yellow or red, the coach suggests easing the workout or taking a rest day – you decide. The Today card in the planner shows it all at a glance. THE PLAN Training blocks across several weeks – build-up, load weeks and tapering before the race. The hard sessions land on the days you actually have time, spaced apart and never right after the long one. How many there are depends on your experience. THE DIARY What you did sits next to what you planned. Time in zones, pace, heart rate, elevation, route map and laps. For your workouts the coach tells you whether you hit the zones and what that means for the next one. Statistics for fixed periods or for any period you choose. All from HealthKit, with no second account and no second watch. ZONES THAT FIT YOU Heart rate, power, pace and cadence ranges, kept separately per sport. Power for cycling and rowing, pace for running, walking, hiking, cycling, swimming and rowing. Taken from HealthKit or set by hand. Metric or imperial. SPORTS Running, cycling, swimming, rowing, walking, hiking, elliptical, strength training, core, HIIT, cross-training, martial arts, yoga, pilates and more. SEVEN DAYS TO TRY, THEN A SINGLE PURCHASE For seven days you get every feature – no payment details, nothing to cancel. After that, a single purchase: no subscription, no renewal. Family Sharing covers up to six people, and the purchase holds for Version 2 for good. If the trial runs out and you do not buy, the workouts you already built stay fully usable. Only building new ones is locked. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Celeris Loop
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Training isn't just about following a plan. It requires constant communication, data monitoring, and continuous adjustments. Celeris centralizes and simplifies all of this, keeping coaches and athletes seamlessly aligned. FOR COACHES: - Centralized management: Manage all your athletes and their programs from a single platform - Daily check-ins: Receive reports and feedback from your athletes powered by AI - Advanced monitoring: Keep internal and external loads under control to prevent overtraining and injuries - Data-driven decisions: Personalize and adapt programming based on how your athletes respond FOR ATHLETES: - Instant access: Access your training plan anytime, anywhere. - Greater awareness: Track your fitness level and visualize your progress over time. - Clear instructions: Get precise details for every session (intensity, target, training stimulus, etc.) - Total focus: Stay locked in on your goals with a clear, guided routine. Your method. Their feedback. One Goal. Download Celeris and take your training to the next level! Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is update cadence: Celeris Loop at every 8 days against Training Builder's every 14 months. Celeris Loop also leads on iOS requirement (17.0 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Training Builder sells 2 in-app purchases, starting at $0.99 per month and Celeris Loop sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.
Training Builder ships an update every 14 months, Celeris Loop every 8 days. The most recent releases landed on November 5, 2026 and November 6, 2026 respectively.
| Parameter | Training Builder | Celeris Loop |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 14 months | Every 8 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 26.0 | 17.0 — better |
| Further details — not scored | ||
| Size | 15 MB | 32 MB |
| Age rating | 4+ | 4+ |
| Developer | Pottbyte Solutions GbR | DIEGO ALDO PETTOROSSI |
In-app purchases
Training Builder
- Premium Month$0.991 Month
- Premium Year$3.991 Year
Celeris Loop
- Atleta Plus (Mese)1 Month trial$4.991 Month
- Coach Standard (Mese)1 Month trial$19.991 Month
- Coach Pro (Mensile)1 Month trial$39.991 Month





